八下unit8课件.pptVIP

present perfect tense: have/has + done 助动词（have/has+过去分词） go do write see take break buy drink drive went gone did done wrote written saw seen took taken broke broken bought bought drank drunk drove driven 表示完成了的动作对现在造成影响,常与下列词连用（already,yet,just,ever,before,never,recently,so far,in the past/last few years) I have ever seen tigers. We have already finished unit 7. . Jim hasn’t eaten breakfast yet. Make sentences as many as possible （already,yet,just,ever,before,never,recently,so far,in the past/last few years) 从过去某一时间开始的状态或动作持续到现在，有可能继续持续下去。 He has been ill for a week./since a week ago. I have been a soldier for 2 years./ since 2 years ago. She has learnt to drive for a month./ since a month ago. I started teaching in 2002. / 14 years ago. I have taught English for 14 years. I have been a teacher for 14 years. I have taught English since 2002. I have been a teacher since 2002. I have taught English since 14 years ago. I have been a teacher since 14 years ago. 2002 now We came to No 2 Middle School in 2013. / 3 years ago. We have studied here for 3 years. We have been here for 3 years. We have studied here since 2013. We have been here since 2013. We have studied here since 3 years ago. We have been here since 3 years ago. 2013 now Look. Jeff is playing the guitar. . Look. It is raining outside. It started to rain 5 days ago. How long…..? He began to play it 3 hours ago How long…..? He has played basketball since he was five years old. He started playing basketball in 1986. How long…..? 成龙（ Jackie Chan ） was born: 1954 act: 1961~ now How long has Jackie Chan acted? since I have made 5 good friends here since 2013. I have made 5 good friends here since I entered the middle school. Ms Jin has taught us English since we entered the middle school. Since 接过去时间点 Since 引导时间状语从句 For+时间段 Ms Jin has taught us for nearly 3 years. Since for 1.I have been studying in this school ____two years. 2. He danced _____ one and a half hours ye